oil deep ovenproof dish.,cook pasta in pan of boiling water uncovered til just tender.,drain rinse pasta under hot water drain.,heat oil in pan cook onion garlic and capsicum til onion soft.,______,place in prepared dish.,brush pastry with egg yolk cut into 1 cm strips place strips over filling in lattice pattern.,press gently against edge of dish.,trim edges.,bake in moderately hot oven about 15 min til pastry is browned.,cheese sauce.,melt butter in pan.,stir in flour.,stir over heat til bubbling.,remove from heat gradually stir in milk stir over heat til sauce boils and thickens slightly.,stir in cheeses and parsley.